What happened here is that leopard seals are quite inquisitive and this one just got fascinated by the front of the camera," Gunton says, explaining how they got so close. "He kept seeing his reflection.

From huge animals to insects – here a male Darwins stag beetle, filmed in Chile, fights with a competing male. The team worked hard to "really get a sense of the insects being in their evironment," Gunton says

"When we decided to do an insect film we said we're going to film them as if they were lions or leopards," Gunton says. "Even though the are a millionth of the size." This picture shows a bombardier beetle

In order to capture this killer whale pod off the Antartic Peninsula, the team had to work with the Royal Navy. "This was probably the most ambitious, time-consuming shot in the entire series," says Gunton

David Attenborough was in his early sixties when Gunton first worked with him 20 years ago. "I think his narrations on Life are some of the best I've heard him do," Gunton says. What he will say about these African giant bullfrogs?